AM51156C43N-A Equivalent & Substitute Parts

Part Overview

The AM51156C43N-A is a snap-action switch manufactured by Panasonic Electric Works, configured as a SPST-NC (Single Pole Single Throw - Normally Closed) device with chassis mount installation. This switch is rated for 11A AC at 125V and features a lever/roller actuator with quick connect termination. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for system maintenance, repair, and redesign applications where continued sourcing of the original component is not feasible.

Substiute Parts

AM51156C43N-A

Panasonic Electric WorksIn Stock: 756AM51156C43N-A Datasheet

Current PartRFQ

83264647

CrouzetIn Stock: 122783264647 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AM51156C43N-A is determined by the following critical parameters:

Circuit Configuration: SPST-NC topology is mandatory. The switch must maintain normally-closed contact state with momentary actuation capability.

Mounting and Termination: Chassis mount installation with 0.187" (4.7mm) quick connect termination must be preserved to ensure mechanical and electrical compatibility with existing PCB layouts and harness assemblies.

Actuator Type: Lever/roller actuator configuration must be maintained for consistent actuation force and travel characteristics.

Electrical Ratings: The substitute must support minimum 11A AC at 125V to meet or exceed the original specification. Higher voltage or current ratings are acceptable provided they do not introduce incompatibilities with the application circuit.

Operating Temperature: The substitute must operate within or encompass the -25°C to 105°C range to ensure functional reliability across the intended environmental conditions.

The Crouzet 83264647 qualifies as a functional substitute based on these criteria: it maintains SPST-NC configuration, chassis mount with identical quick connect termination, lever/roller actuation, and exceeds the electrical requirements (12A AC at 250V). Operating temperature range (-20°C to 125°C) encompasses the original specification.

Parameter Comparison

Engineering Selection Recommendations

The Crouzet 83264647 is suitable as a substitute for the obsolete AM51156C43N-A based on the following engineering criteria:

Functional Equivalence: Both switches maintain identical SPST-NC circuit topology, on-momentary switch function, and chassis mount configuration with matching quick connect termination. Mechanical actuation characteristics (lever/roller) are preserved.

Electrical Superiority: The Crouzet part exceeds the original electrical specification, rated for 12A AC at 250V compared to 11A AC at 125V. This provides margin for application robustness.

Active Product Status: The Crouzet 83264647 is currently in active production, ensuring long-term availability and supply chain continuity compared to the obsolete Panasonic part.

Compliance Certification: The Crouzet part carries RoHS Compliance and REACH Unaffected status, meeting modern regulatory requirements. The original Panasonic part is cadmium-free but lacks explicit modern compliance documentation.

Mechanical Life Consideration: The Crouzet part specifies 1,000,000 mechanical cycles versus 10,000,000 for the original. Application duty cycle must be evaluated to determine if this reduction is acceptable for the intended use case.

Frequently Asked Questions (FAQ)

Q: Can the Crouzet 83264647 directly replace the AM51156C43N-A in existing assemblies?

A: Yes, provided the application duty cycle does not exceed 1,000,000 mechanical cycles. Both switches share identical mounting type (chassis mount), termination style (0.187" quick connect), and circuit configuration (SPST-NC). Physical dimensions are nearly identical (operating position 20.7mm vs. 20.5mm). No PCB or harness modifications are required.

Q: What is the impact of the lower operating force (51gf vs. 60gf) on the Crouzet substitute?

A: The Crouzet part requires 9gf less operating force. This may result in slightly more sensitive actuation. Applications requiring specific actuation force characteristics should evaluate this difference against functional requirements.

Q: Is the reduced operating temperature range (-20°C vs. -25°C minimum) a concern?

A: The Crouzet part operates from -20°C to 125°C, which encompasses most industrial and commercial applications. If the system requires operation below -20°C, the original Panasonic specification (-25°C minimum) would be necessary.

Q: How does the mechanical life difference affect component selection?

A: The Crouzet part is rated for 1,000,000 mechanical cycles compared to 10,000,000 for the original. For applications with high cycle counts (exceeding 1,000,000 cycles), the reduced mechanical life rating must be factored into maintenance planning and component replacement intervals.

Q: Are there any compliance or certification differences between the two parts?

A: The Crouzet 83264647 is RoHS Compliant and REACH Unaffected. The Panasonic AM51156C43N-A is cadmium-free but does not carry explicit modern compliance certifications. For applications requiring RoHS or REACH compliance, the Crouzet part is the appropriate choice.